|CONNECTAT(2)||FreeBSD System Calls Manual||CONNECTAT(2)|
NAMEconnectat — initiate a connection on a socket
LIBRARYStandard C Library (libc, -lc)
SYNOPSIS#include < sys/types.h>
#include < sys/socket.h>
#include < fcntl.h>
connectat( int fd, int s, const struct sockaddr *name, socklen_t namelen);
DESCRIPTIONThe connectat() system call initiates a connection on a socket. It works just like the connect(2) system call with two exceptions:
- It is limited to sockets in the PF_LOCAL domain.
- If the file path stored in the sun_path field of the sockaddr_un structure is a relative path, it is located relative to the directory associated with the file descriptor fd. If connectat() is passed the special value AT_FDCWD in the fd parameter, the current working directory is used and the behavior is identical to a call to connect(2).
RETURN VALUESThe connectat() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.
ERRORSThe connectat() system call may fail with the same errors as the connect(2) system call for a UNIX domain socket or with the following errors:
- [ EBADF]
- The sun_path field does not specify an absolute path and the fd argument is neither AT_FDCWD nor a valid file descriptor.
- [ ENOTDIR]
- The sun_path field is not an absolute path and fd is neither AT_FDCWD nor a file descriptor associated with a directory.
SEE ALSObindat(2), connect(2), socket(2), unix(4)
AUTHORSThe connectat was developed by <email@example.com> under sponsorship from the FreeBSD Foundation.
|February 13, 2013||FreeBSD|